Forgiveness can be a tricky thing! Sometimes you will find that you have to repeat the process a few different times because old grudges have a way of sneaking back into their cozy spot like a dog that won't stay off the couch. This is especially true if the grudge is over a deep hurt you've dealt with for a long time. I struggle with this myself and I've learned that when you become aware that you are re-embracing an old grudge it's very important in that moment to look right at it, remember why you dumped it in the first place, and then put it back in the recycling bin where it belongs. Until you clear out the spot in your inventory that it occupies, you will have a hard time replacing it with something good and useful.